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Low Energy Building Design 2010

Low Energy Building Design 2010. Presentation 1 Arnaud Gibert Bintou Ouedraogo Danny Tang Naeema Hafeez Paul Dupuy. Aims of Project. Develop 3 Conceptual Designs Design for low Energy, Sustainable Homes Design to Code Level 5 or better Develop efficient Energy System methods.

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Low Energy Building Design 2010

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  1. Low Energy Building Design 2010 Presentation 1 Arnaud Gibert BintouOuedraogo Danny Tang NaeemaHafeez Paul Dupuy

  2. Aims of Project • Develop 3 Conceptual Designs • Design for low Energy, Sustainable Homes • Design to Code Level 5 or better • Develop efficient Energy System methods

  3. Design Brief • Design of 3 sustainable, energy efficient housing types. • Consisting of 20 dwellings, forming a community of net zero carbon. • Located in rural Ayrshire. • Intended design is to be an exemplar for developments of the future.

  4. Basic Specifications • Including: 1) 4 four bedroom house 2) 10 three bedroom house 3) 6 two bedroom house • Consider transportation of commuting • Occupants • Resources • Relevant energy systems for the site that will create optimum energy efficiency • Community size approx. 60 individuals

  5. Definition of ‘Zero Carbon’ Home • Where no fossil fuels are used to run the house with heat and power. • A house which emits zero or negative CO2 emissions from all energy used in the building is zero over the course of the year • using energy efficient materials and renewable technologies. • Zero Carbon is equivalent to Code Level 6 of the Code for Sustainable Homes

  6. Code for Sustainable Homes • Introduced in England in April 2007 • It is a measure of the ‘whole home’ as a complete package • The Code, adopted by the Government, consists of 9 sustainable design categories. • credits are awarded, if individual targets are attained. The total is calculated and a rating between level 1 and 6 is given, where 6 is the most efficient, ‘zero carbon’. • Nine Categories: Energy and CO2 emissions, Pollution, Water, Health and Well-being, Materials, Surface Water run-off, Waste, Management, Ecology. • Aim for this particular project: achieve a Code Level 5 or better • Energy efficiency for code 5 is 100%

  7. Modern ZC Houses: Code 5 • Reduce energy demand as much as possible • Such as insulation, ventilation etc • Produce zero carbon energy • High efficiency technologies • Reduce building carbon cost • Embodied energy of materials • Design of building • Interior layout • Exterior of building

  8. Case Study 1 DFM (Design and Manufacturing)House: Oxley Woods Block B Government led programme to build high quality, sustainable house with construction cost as low as £60,000. • Building Design • Structure • timber frame panels • thermally efficient structure to minimise heat losses. • Walls • Warmcel insulation • Roof • Timber Cassette, rigid polyurethane insulation

  9. U-values and Materials • Envelope Walls U = 0.12 W/m2K • 145mm cavity fully filled with Warmcel insulation made from recycled newspaper. • Roof U = 0.17 W/m2K • Roof panel covered with 100mm rigid polyurethane board. Having timber underneath the insulation allows ventilation to limit the risks of timber rot. • Windows U = 1.7 W/m2K • Double glazed with low e glass. • Air tightness 2.5 m3/m2/hr at 50 Pa • The houses are built using a balloon timber frame system where the timber stud framing is extended through several storeys with the upper floor fixed to the studs at an intermediate level.

  10. Case Study 2 • Old Apple Store to a private house • Awarded Code Level 5 • Construction • Materials: Materials locally sourced: off-site manufactured timber • Insulation: recycled newspaper, external insulation wood fibre planks. Sheep’s wool for internal insulation • Sustainability Features • Solar thermal water heating • PV Cells • Passive solar design • Rainwater harvesting • Highly insulated with the use of low embodied carbon material • Low air permeability • Wood pellet boilers

  11. U-values of materials • Technical Performance • External Material: Thermally efficient timber cassette shell, u-value of 0.14W/m2K • Roof: engineered ‘I’ beams loaded with salvaged newspaper insulation with wood fibre, u-value 0.12W/m2K • Floor: Concrete boards, u-value 0.15W/m2K • Doors and windows: Triple glazed

  12. Different types of Ecohomes

  13. Site Location

  14. Site • 3km west of the existing communities of Auchinleck and Cummnock in East Aryshire • Site rises from 100 to 120m • Need to consider this in design • Proposed site lies on a S-facing slope • Site on reclaimed land • Surrounded by agricultural land and forestry

  15. Site Analysis • Site nearby Glenmuir water • Maybe a resource of hydro energy, river not big enough for electricity however a possibility • Timber factory next to site • Local fabricate material • Biomass for CHP • A70 and A76 both close to site • Easy access routes for the community • Access for other materials • Landscaped pit bing • already mined- CHP

  16. Occupants • Auchinleck Academy, Cumnock college and East Ayrshire hospital all close to site • Transportation • Railway station • Bus Station • Major roads: A70 and A76 • Prestwick airport • Landscape around site aesthetically pleasing • The site is environmentally pleasing • Agricultural land and forestry • There are recreational attractions • Countryside • Rugby Club • High Quality suburban lifestyle • Developments with gardens • In a isolated area gives a sense of privacy

  17. Climate Conditions • Estimated 1000 hours of solar gain per year • Yearly rainfall 777mm • Water saving measures: Grey water • Excellent visibility • Excellent Air quality • Clean fresh air

  18. Renewable energy Resources from climate • Monthly average wind speed >3m/s • Prevailing wind in Scotland from the south-west, direction may change from day-to-day • Consider Micro wind turbine • Average yearly global radiation 1140 W/m2 • Daily sunshine figures peak in May and June and are at there lowest in December • Consider PV panels • Solar thermal

  19. Energy Demands • Average Home • 1. Working Couple - 4,117 kWh electricity2. Single Person - 3,084 kWh electricity3. Family with two children - 5,480 kWh electricity(Parents working, children at school) • Passive House • Annual heating requirement is 15kWh/(m2a) • Target for future projects is 42kWh/(m2a) • Should not exceed 120kWh/(m2a) • Heat, water and household electricity

  20. Energy Efficient Methods

  21. Controlling Energy systems How different types of energy sources can be used into modern day households to reduce carbon emissions. This diagram shows how each method can be put into use so that energy given out is put back into the building.

  22. Plan of Work • Finalised 3 conceptual designs • Materials • Low in embodied energy • Cost • Energy demands calculated and finalised • An approximation on the types of energy systems that will be used • How much energy each renewable system can provide • Cost

  23. ANY QUESTIONS??

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